KR20220116648A - System for Providing Route Guide Service Using Road Marker - Google Patents

Abstract

The present invention relates to a system for providing a route guide service by using a road marker, which identifies a moving route of a user by determining the location of the user through a beacon signal output from a road maker, and can provide a safe route to a destination to prevent pedestrians from being exposed to danger. The system has a plurality of markers disposed to be adjacent to each other, forming a virtual area, and can determine whether a pedestrian enters the virtual area to identify a moving route, thereby accurately providing a route guide service to the socially disadvantaged such as the visually impaired. In addition, the system can identify safety factors and risk factors in a route to destination information input by the user and provide a safe route to the user, thereby minimizing exposure of the user to danger. In addition, the present invention can determine whether the pedestrian has deviated from the moving route through the sensitivity of the beacon signal received by a terminal and inform of whether the pedestrian has deviated therefrom, thereby preventing the user from departing from an expected moving route.

Description

System for Providing Route Guide Service Using Road Marker

The present invention relates to a system for guiding a road using a signpost, and more particularly, determining the user's location through a beacon signal output from the signpost to identify the user's moving path, and to a destination where pedestrians are exposed to danger. It relates to a road guidance system using a sign that can provide a safe route to prevent accidents.

In general, a road sign is a device that reflects vehicle lights or emits light through LEDs so that a driver can identify a center line, a lane, etc. of a road when driving at night. Recently, it is installed not only on roads but also on trails, bicycle lanes, shoulders, stop lines, and crime zones. As it is installed on roads and on foot, it is effective in preventing accidents for drivers and pedestrians.

These road signs are attached to the road or floor and serve to guide pedestrians, but there is a problem in that it is difficult for the socially disadvantaged such as the visually impaired and the elderly to recognize. In recent years, multifunctional signs have been developed not only to simply guide the road, but also to provide warning notifications to prevent accidents and provide information on current locations.

Korea Registered Credit Model No. 20-0475044 (hereinafter referred to as 'prior literature') uses a mobile terminal having a data transmission/reception function to provide information on various underground facilities, bridge facility information, civil engineering facility information, and building facility information built into the beacon. And it relates to a pond for providing information on underground facilities through which information of at least any one of cadastral information can be easily obtained. Prior literature is provided with a communication unit made of any one of RFID, UHF, or NFC inside the beacon, so that at least one of various underground facility information, bridge facility information, civil engineering facility information, building facility information and cadastral information is provided with a mobile terminal. There is an effect that can be obtained easily.

However, there is a need for a technology that not only provides information, but also requires a function of guiding the visually impaired, and preventing the user from being guided to a wrong path due to an error in a wireless signal and a GPS signal.

Korea Registered Credit Model No. 20-0475044 (Title of invention: underground facility information provision sign, registration date: October 27, 2014)

An object of the present invention is to identify a movement path by judging whether a plurality of markers are disposed at a mutually adjacent distance to form a virtual area and whether a pedestrian enters the virtual area in order to solve the above problems.

Another object of the present invention is to provide a safe route to pedestrians by identifying safety factors and risk factors in the route from the current location to the destination.

In addition, an object of the present invention is to determine whether a pedestrian has deviated from a movement path through signal sensitivity of a beacon signal received by a terminal and to inform whether or not the pedestrian has departed.

A road guidance system using a marker according to the present invention receives a beacon signal from a group of markers in which a plurality of markers are arranged at a mutually adjacent distance to form a virtual area having location information and designated as one group, and the group of markers a beacon receiver; an entry determination unit for determining whether to enter the virtual area through the beacon signal; and a terminal including a movement path identification unit for sequentially recognizing the entry order of the virtual area and other virtual areas to identify a movement path.

The terminal according to the present invention is a GPS signal, a wifi signal received from the outside, a location detector that detects a location through any one of the beacon signal, and searches a route to the destination information input by the user, but the pedestrian is dangerous A safety path providing unit that provides a safe path to prevent exposure to, a group designating unit that registers the unique number of the marker constituting the virtual area and designates it as one group, the unique number of the marker includes the location information is designated, an arrival knowledge classification unit for identifying the arrival location of the destination through the specified location information, the terminal is a signal sensitivity measuring unit for measuring the signal sensitivity received by the beacon receiving unit, the terminal is the signal of the beacon reception Departure determination unit for determining whether the pedestrian deviated from the movement path through sensitivity. When the pedestrian deviates from the movement path, a notification unit notifying whether or not the pedestrian departs through auditory and tactile sense, and the terminal, when the signal sensitivity of the beacon reception is lower than the set value, the interval for receiving the beacon signal and a reception mode change unit for changing the reception mode to be delayed by time.

The entry determination unit according to the present invention determines whether the virtual area has entered the virtual area or has been released from the virtual area through the intensity of the signal sensitivity and the time during which the signal is maintained, and the signal sensitivity measurement unit enters the virtual area by the signal sensitivity measurement unit. When the signal sensitivity lower than the signal sensitivity for satisfying the entry condition is measured by a predetermined value, the entry determination unit determines that the virtual area is to be entered.

The location detection unit according to the present invention is a priority designating unit for designating signal information to be preferentially used as location information among the GPS signal, the wifi signal, and the beacon signal, and the GPS signal, the wifi signal, and a location information determination unit for determining a current location from location information according to the beacon signal.

The safety path providing unit according to the present invention includes a hazard identification unit for identifying a hazard within the safe path, a safety component identifying unit for identifying a section distance in which the beacon signal can be received within the safe path, and the hazard and the above and a safety index determining unit for determining the safety index of the safety route through the section distance.

In the present invention, a plurality of signs are arranged at mutually adjacent distances to form a virtual area, and by determining whether a pedestrian enters the virtual area to identify a movement path, the effect of accurately guiding the socially disadvantaged such as the visually impaired there is

In addition, the present invention provides a safe route to the user by identifying the safety and risk factors in the route to the destination information input by the user, thereby minimizing the user's exposure to risks.

In addition, the present invention can prevent the user from deviating from the expected movement path by determining whether or not the pedestrian has deviated from the movement path through the signal sensitivity of the beacon signal received by the terminal and notifying whether the pedestrian has departed.

1 is a block diagram of a road guidance system using a sign according to the present invention.
2 is a view showing a method of identifying a movement path using a marker group according to the present invention.
Figure 3 is an embodiment of the safe route according to the present invention, the shortest route from the current location to the destination.
4 is another embodiment of the safe route according to the present invention, a safe route from the current location to the destination.
Referring to FIG. 5 , it is an embodiment of determining whether or not the movement path is deviated according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing an embodiment of the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram of a road guidance system using a sign according to the present invention. Referring to FIG. 1 , a road guidance system using a sign may include a sign group 100 and a terminal 200 .

The marker group 100 is composed of a plurality of markers to form a virtual area having location information. The example of FIG. 1 is a case where a total of four markers 100A, 100B, 100C, and 100D are disposed at a mutually adjacent distance to form a virtual area. Each label may be provided with a light emitting device, a battery, a communication means, and the like. The light emitting device is a device capable of light emitting and flickering, and may be composed of an LED element or the like. The light emitting device is provided in the label and is driven by power supplied by a battery. The battery may receive power from the outside or utilize power generated through self-generation such as solar power. The communication means is a device for short-distance wireless communication with the terminal 200, and may be composed of a short-range communication module such as a beacon, Bluetooth, or Wi-Fi, but in the present invention, a beacon ( It is best to use beacons.

Referring to FIG. 1 , the terminal 200 includes a group designation unit 210 , a position detection unit 220 , a signal sensitivity measurement unit 230 , an entry determination unit 240 , a movement path identification unit 250 , and a safety path. It may include a provision unit 260 , a departure determination unit 270 , a notification unit 280 , and a reception mode change unit 290 .

[One. Designation of marker group]

A unique number (ID) is assigned to each sign, and the group designation unit 210 registers a unique number (ID) of the sign constituting the virtual area.

The location detector 220 includes a GPS module 221 for receiving a GPS signal, a wifi module 222 for receiving a wifi signal received from the outside, a beacon receiver 223 for receiving a beacon signal from a beacon group, priority It may include a designation unit 224 and a location information determination unit 225 .

[2. Location information judgment]

The priority designation unit 224 specifies signal information to be preferentially used as location information among GPS signals, wi-fi signals, and beacon signals. The location information determination unit 225 determines the current location from location information of a GPS signal, a wi-fi signal, and a beacon signal according to priority. For example, if the GPS signal is designated as the 1st priority, the beacon signal as the 2nd priority, and the wi-fi signal as the 3rd priority, the location information is first determined through the GPS signal, and the location information is precisely determined through the beacon signal designated as the 2nd priority. This can be done in a way that is properly corrected. In addition, if the GPS signal designated as the 1st priority is not received, the location information can be identified through the 2nd priority beacon signal and the 3rd priority wifi signal. The location information of the wi-fi signal can utilize an access point (AP), and the identification of the location information of the beacon signal will be described later in detail.

The signal sensitivity measuring unit 230 measures the signal sensitivity (RSSI) received by the beacon receiving unit 223 . The entry determination unit 240 determines whether the pedestrian is scheduled to enter the virtual area, whether to enter or exit, based on the intensity of the signal sensitivity (RSSI) and the time the signal is maintained.

The following example is a case where the entry condition for maintaining -40 dBm or more and 0.5 seconds or more is designated as the entry condition, -60 dBm or less and 3 seconds or more as the exit condition, and between -70 dBm and -80 dBm are designated as the entry scheduled conditions.

If a certain level of signal sensitivity (between -70 dBm and -80 dBm) lower than -40 dBm designated as the virtual area is received, the entry determination unit 240 determines that the pedestrian is going to enter the virtual area, and the notification unit 280 information is provided to users through When the signal sensitivity received by the terminal 200 is maintained at -40 dBm or more and 0.5 seconds or more after receiving the information on the entry schedule, the pedestrian may recognize that the pedestrian has reached the virtual area. After reaching the virtual area, when the intensity of the signal sensitivity received by the terminal 200 is maintained at -60 dBm or less for 3 seconds or longer, it is determined that the virtual area has been terminated.

The marker group of the present invention consists of a plurality of markers, and in general, the marker group consists of four markers to form a virtual area. When it is determined that three markers in the group of markers have entered the area, the entry determination unit 240 determines that the virtual area is finally entered.

[3. Identification of movement route]

The movement path identification unit 250 identifies the movement path by sequentially recognizing the entry order of the virtual area and other virtual areas. The movement path identification will be described in detail with reference to FIG. 2 below.

2 is a diagram illustrating a method of identifying a movement path using a marker group according to the present invention. Referring to FIG. 2 , it can be seen that each marker group (M1, M2, M3, M4) is composed of four markers.

(1) If it is determined that the first beacon group M1 is entered, the terminal 200 determines that it is located at 'A'.

(2) If it is determined that the entry is scheduled through the markers 1 and 2 of the marker group M2, the terminal 200 determines that it is located at '1'.

(3) If it is determined that three or more markers among the marker group M2 are entering, the terminal 200 determines that it is located at 'B'.

(4) If it is determined that the entry is scheduled through the markers 1 and 2 of the marker group M2, the terminal 200 determines that it is located at '1'.

(5) If it is determined that three or more markers among the marker group M2 are entering, the terminal 200 determines that it is located at 'B'.

(6) If it is determined that the entry is scheduled through the markers 2 and 3 of the marker group M3, the terminal 200 determines that it is located at '2'.

(7) If it is determined that three or more markers among the marker group M3 are entering, the terminal 200 determines that it is located at 'C'.

(6) If it is determined that the entry is scheduled through the markers 4 and 3 of the marker group M4, the terminal 200 determines that it is located at '3'.

(7) If it is determined that three or more markers among the marker group M4 are entering, the terminal 200 determines that it is located at 'D'.

(8) If it is determined that the entry is scheduled through markers 4 and 1 of the marker group M1, the terminal 200 determines that it is located at '4'.

As in steps (1) to (8), the movement path identification unit 250 of the present invention identifies the movement path of A→1→B→2→C→3→D→4 by using the marker group. .

[4. Provide a safe route]

The safe route providing unit 260 searches for a route to the destination information input by the user, but provides a safe route for preventing pedestrians from being exposed to danger. Referring to Figure 1. The safety path providing unit 260 may include a risk factor identification unit 261 , a safety factor identification unit 262 , and a safety index determination unit 263 .

The hazard identification unit 261 identifies a hazard within the safety path. Hazard factors may mean areas that may harm the visually impaired, such as crosswalks, highways, and automatic exclusive roads.

The safety element identification unit 262 identifies a section distance in which a beacon signal can be received within a safety path. When a visually impaired person is guided to a location only with a GPS signal, there may be a case where the user's location cannot be accurately determined due to an error in the GPS signal. Therefore, if the pedestrian is located within the sign group, the user's location can be determined more accurately, and through this, the pedestrian can be safely protected.

The safety index determination unit 263 determines the safety index of the safety path through the distance between the dangerous elements and the beacon signal can be received. There are few risk factors and the longer the section where beacon signal reception is possible, the higher the safety index is measured.

The safety path according to the safety index will be described in detail with reference to FIGS. 3 to 4 .

Figure 3 is an embodiment of the safe route according to the present invention, the shortest route from the current location to the destination. Looking at the shortest path in FIG. 3 , the risk factors C1, C2, and C5 are included, and the safety factors M1, M2, M3, M4, M5, M12, M13, M14 are included. The safety index is measured by deducting points for convenience risk factors and additional points for safety factors. Therefore, the shortest distance in FIG. 3 is measured as risk factor -3 and safety factor 8, resulting in a safety index of 5.

4 is another embodiment of the safe route according to the present invention, a safe route from the current location to the destination. Looking at the safety path of FIG. 4 , the risk factors C1 and C6 are included, and the safety factors M1 to M14 are included. Therefore, the shortest distance in FIG. 4 is measured as a risk factor of -2 and a safety factor of 14, resulting in a safety index of 12.

Although the general road guidance system guides the shortest distance from the current location to the destination, the present invention is a road guidance system for the socially disadvantaged, such as the visually impaired, and has the advantage of minimizing the exposure of pedestrians to danger through the safety index. .

[5. Deviation judgment]

The departure determination unit 270 determines whether the pedestrian deviated from the movement path through the signal sensitivity of the beacon reception. Hereinafter, the determination of whether to deviate from the movement path according to the present invention will be described with reference to FIG. 5 . The user is guided by the expected route from the source M1 to the destination M4. When the user's terminal 200 is located in S1, the signal sensitivity of the source M1 is -30 dBm, which satisfies the entry area (-40 dBm or less). However, because the visually impaired are guided only by hearing, there are cases where they deviate from the expected route such as S2 and S3. Accordingly, when the signal sensitivity (dBm) is gradually lowered by the signal sensitivity measurement unit 200, the departure determination unit 270 determines that the user deviates from the expected path. -40dBm at S3)

When the pedestrian deviates from the movement path, the notification unit 280 notifies whether the pedestrian has departed through auditory and tactile sense.

[6. Change receiving mode]

When the signal sensitivity of the beacon reception is lower than the set value, the reception mode change unit 290 changes the reception mode to delay the interval for receiving the beacon signal by a predetermined time.

In general, the reception mode continuously determines whether a signal is received at a predetermined time interval. Therefore, if it continues to operate in the reception mode, there is a problem that the battery of the terminal is continuously consumed even when a signal is not received.

Accordingly, in the present invention, when the intensity of sensitivity received by the terminal 200 is lower than a predetermined value, the terminal is changed from the reception mode to the sleep mode to reduce battery consumption. In the sleep mode, the time interval for receiving a signal is set wider than that in the reception mode, so that battery consumption can be reduced.

In the sleep mode, when the intensity of sensitivity received by the terminal becomes higher than a predetermined value, the terminal changes from the sleep mode to the reception mode.

100: cover group 200: terminal
210: group designation unit 220: location information detection unit
230: signal sensitivity measuring unit 240: entering or not determining unit
250: movement path identification unit 260: stable path providing unit
270: departure determination unit 280: notification unit
290: receiving mode change unit

Claims (10)

a marker group in which a plurality of markers are disposed at a mutually adjacent distance to form a virtual area having location information and are designated as one group; and
a beacon receiver for receiving a beacon signal from the beacon group; an entry determination unit for determining whether to enter the virtual area through the beacon signal; and a terminal including a movement path identification unit for sequentially recognizing the order of entry of the virtual area and other virtual areas to identify a movement path.
According to claim 1,
The terminal further comprises a location detection unit for detecting a location through any one of a GPS signal, a wifi signal received from the outside, and the beacon signal.
3. The method of claim 2,
The location detection unit may include: a priority designation unit for designating signal information to be preferentially used as location information among the GPS signal, the wifi signal, and the beacon signal; and
and a location information determination unit for determining a current location from location information according to the GPS signal, the wifi signal, and the beacon signal through the priority.
According to claim 1,
The terminal searches a route to the destination information input by the user, but a safety route providing unit that provides a safe route to prevent the pedestrian from being exposed to danger. road guidance system.
5. The method of claim 4,
The safety path providing unit
a hazard identification unit for identifying a hazard within the safety path;
a safety element identification unit for identifying a section distance in which the beacon signal can be received within the safety path; and
A road guidance system using a signpost, comprising: a safety index determining unit that determines a safety index of the safety route through the risk factor and the section distance.
According to claim 1,
The terminal may include: a group designation unit for registering a unique number of a marker constituting the virtual area and designating it as the one group; and
The location information is designated in the unique number of the sign, and an arrival knowledge identification unit for identifying the arrival location of the destination through the designated location information.
According to claim 1,
The terminal further includes a signal sensitivity measurement unit for measuring the signal sensitivity received by the beacon receiver;
Wherein the entry determination unit determines whether the virtual area has entered the virtual area or the virtual area is terminated through the intensity of the signal sensitivity and the time the signal is maintained.
8. The method of claim 7,
The terminal may include: a departure determination unit for determining whether the pedestrian has deviated from the movement path through the signal sensitivity of the beacon reception; and
When the pedestrian deviates from the movement path, a notification unit notifying whether the pedestrian has departed through auditory and tactile sense;
8. The method of claim 7,
When the signal sensitivity of the beacon reception is lower than a set value, the terminal further comprises a reception mode change unit for changing the reception mode to delay the interval for receiving the beacon signal by a predetermined time. road guidance system.
8. The method of claim 7,
When a signal sensitivity lower than the signal sensitivity for satisfying the condition for entering the virtual area by the signal sensitivity measurement unit is measured by a predetermined value, the entry determination unit determines that the virtual area is scheduled to be entered A road guidance system using a signboard.

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